| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| /* |
| * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2015 by Delphix. All rights reserved. |
| */ |
| |
| #ifndef _SYS_ZRLOCK_H |
| #define _SYS_ZRLOCK_H |
| |
| #include <sys/zfs_context.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef struct zrlock { |
| kmutex_t zr_mtx; |
| volatile int32_t zr_refcount; |
| kcondvar_t zr_cv; |
| uint16_t zr_pad; |
| #ifdef ZFS_DEBUG |
| kthread_t *zr_owner; |
| const char *zr_caller; |
| #endif |
| } zrlock_t; |
| |
| extern void zrl_init(zrlock_t *); |
| extern void zrl_destroy(zrlock_t *); |
| #define zrl_add(_z) zrl_add_impl((_z), __func__) |
| extern void zrl_add_impl(zrlock_t *, const char *); |
| extern void zrl_remove(zrlock_t *); |
| extern int zrl_tryenter(zrlock_t *); |
| extern void zrl_exit(zrlock_t *); |
| extern int zrl_is_zero(zrlock_t *); |
| extern int zrl_is_locked(zrlock_t *); |
| #ifdef ZFS_DEBUG |
| extern kthread_t *zrl_owner(zrlock_t *); |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _SYS_ZRLOCK_H */ |